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1853. 
a!2. Chapmah, E. J. Mineralogical Notes: •—Second Series. 
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1863. 
a!3. South, Sir J. Experiments, -made at Watford, on the 
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1870. 
a 14. Cussahs, J. E. History of Hertfordshire. (Geological 
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a!5. Deah, G. A. The Culture, Management, and Improvement 
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al6. Evahs, J. The Ancient Stone Implements, Weapons, and 
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1873. 
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